Operation
Pressure Relief Procedure
WARNING
FLUID INJECTION HAZARD
To reduce the risk of serious bodily inju- ry, including fluid injection,splashing in the eyes or on the skin, or injury from
moving parts, always follow this procedure when- ever you shut off the pump, when checking or serv- icing any part of the dispensing system, when installing, cleaning, or changing part of the valve, and whenever you stop dispensing.
1.Shut off the air supply to the bead tank. Bleed the bead tank.
2.Close the
3.Actuate the dispensing valve to relieve pressure.
4.Leave the drain valve(s) open until you are ready to dispense again.
If you suspect that the dispensing valve or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, very slowly loosen the hose end coupling and relieve pressure gradually, then loosen completely. Now clear the valve or hose.
Adjustments
Set the actuating air to at least 50 psi (3.5 bar) and start the pump. Set the glass bead supply tank pres- sure between 30 psi and 75 psi for desired flow rate.
Note: Bead delivery will vary with each application. Always test the system for actual delivery and adjust air pressure or nozzle size as needed.
Application Data
See Road Lazer System Manual 308611.
Nozzle Size Selection
Use the Nozzle Size Selection and Bead Delivery Tables to select the size of nozzle for the travel speed and bead coverage to be used. These tables are based on a 15 mil paint application.
1.Go to Bead Delivery (Lb/Min) Table and select:
a.Speed in MPH or KPH row.
b.Bead coverage in Pounds Per Gallon column.
c.Value at intersection of MPH row and Pounds Per column is bead delivery in lb/min.
2.Go to Nozzle Size Selection Table and select:
a.Bead Delivery (lb/min) column determined by Bead delivery (lb/min) value.
b.Psi value Glass Bead Tank psi row.
c.Curve (1, 2, 3 or 4) at intersection of Glass Bead Tank psi row and Bead Delivery (lb/min) column is nozzle size value.
d.Select nozzle size that allows range of adjust- ment for more or less flow.
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